Systems

 

 

Integrated electrical and low-voltage systems of all types—inside and outside a building—encompass the range of work that electrical contractors do. The articles in this section highlight different types of work, from security, fire and life safety, to traditional electrical power and distribution, to lighting, cabling and more. 

Splicing safety mostly follows the same guidelines installers use when installing any fiber optic cable plant. However, there are some special issues to be aware of.

My January 2015 article, “It’s Just Math,” explained how various parameters used to evaluate power quality (PQ) are derived while avoiding formulas and other mathematical expressions.

Electrical contractors (ECs) are bearing witness to dramatic changes in the physical security industry. Everything is moving to the network. Customers connect to systems and services with smartphone apps.

In my 40-plus years in fire protection, I have learned that electrical contractors (ECs) sell and install the lion’s share of fire alarm systems in medium- to large-size buildings. Most of these contractors also finish the installation, pass the acceptance test and move on to the next project.

More on Systems

 
Wire Cutting and Paralleling

A little innovation goes a long way More than 25 years ago, Rexel’s Upper Marlboro (Md.) Regional Distribution Center came up with a value-add to improve service to contractor customers. Among the first to take advantage of Rexel’s wire cutting and paralleling service was Dynalectric Co.


READ MORE
 
Motor-Operated Appliances

Article 422 of the 2002 National Electrical Code covers electrical appliances used in dwellings, commercial facilities and some industrial installations. Many appliances utilize only electrical power.


READ MORE
 
Zone Cabling

It’s obvious that fiber optics is not copper wiring. Advantages of fiber include the capability of going longer distances at higher speeds, plus immunity to electromagnetic radiation. These advantages overcame its cost disadvantage and made it the cabling choice for telecommunication and CATV.


READ MORE
 
Security System Cabling

Because we all want to feel safe and secure, the prevalence and necessity of security systems has always been a driving factor in business and industry. The tragic events of Sept.


READ MORE
 
Monitoring Systems Remotely

Advances in technology have made the remote monitoring of commercial building systems both possible and economical.


READ MORE
 
Can You Buy at Auction?

January’s column discussed how companies that hire construction contractors are using reverse auctions to drive prices down. It is electronic bid-shopping with a sophisticated veneer. Can you use reverse auctions to buy material or services? First, reverse auctions are not a good way to buy.


READ MORE

Pages